1. School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 Israel
2. Biosynth Carbosynth, Rietlistrasse 4 Postfach 125 9422 Staad, Switzerland
3. Department of Organic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovakia
4. Auchem s.r.o., A. Hlinku 1452/3, 022 01 Čadca, Slovakia